AMERICAN CENTRIFUGE OPERATING, LLC

THE PURPOSE OF THIS AMENDMENT TO THE CONTRACT IS TO AUTHORIZE MULTIPLE CHANGE ORDERS, APPROVE A NEW CBA AGREEMENT, AND EXTEND THE PHASE 2 PERIOD OF PERFORMANCE.

INCREMENTALLY FUND CLIN 0002 IN THE AMOUNT OF $11,049.88. INCREMENTALLY FUND CLIN 0003 IN THE AMOUNT OF $107,993,746.00.

AUTHORIZE MOVING SCOPE FROM CLIN 003 TO CLIN 002 TO PURCHASE THE LEU FEED CYLINDER THEY NEED FOR PHASE 3 PRODUCTION IN NOVEMBER 2025, PROCURING ADDITIONAL WASTE STORAGE, AND INCREMENTAL FUNDING FOR CLIN 002 IN THE AMOUNT OF $8,238,455.24.

1. AUTHORIZE CONTINUED PERFORMANCE OF PHASE 2 ACTIVITIES THROUGH JUNE 30, 2025, AND AUTHORIZE LIMITED FUNDING IN THE AMOUNT OF $8,530,292.00 2. PROVIDE INCREMENTAL FUNDING UNDER CLIN 0002 IN THE AMOUNT OF $8,530,292.00

1. AUTHORIZE CONTINUED PERFORMANCE OF PHASE 2 ACTIVITIES THROUGH MAY 31, 2025. 2.PROVIDE INCREMENTAL FUNDING UNDER CLIN 0002 IN THE AMOUNT OF $7,600,000, CHANGING THE TOTAL OBLIGATIONS FOR CLIN 0002 FROM $144,722,536 TO $152,322,536.

NEW TASK ORDER AWARD UNDER THE LOW-ENRICHED URANIUM (LEU) - ENRICHMENT ACQUISITION IDIQ FOR AMERICAN CENTRIFUGE LLC FOR THE DEVELOPMENT OF A REPORT FOR THE DEPLOYMENT OF NEW ENRICHMENT CAPACITY AND POSSIBLE FOLLOW-ON TASKS.

THE PURPOSE OF THIS MODIFICATION IS TO DE-OBLIGATE $500,000 FROM CLIN 2 OF THE LEU ENRICHMENT MASTER IDIQ (ACO) FOR THE PURPOSE OF FUNDING A PROPOSED TASK ORDER.

THE PURPOSE OF THIS AMENDMENT TO THE CONTRACT IS TO: 1.EXTEND THE DEFINITIZATION DEADLINE DETAILED IN MODIFICATION 017 OF THIS CONTRACT FROM MARCH 31, 2025 TO APRIL 30, 2025. 2.AUTHORIZE CONTINUED PERFORMANCE OF PHASE 2 ACTIVITIES THROUGH 4/30/25

THE PURPOSE OF THIS MODIFICATION IS TO: 1. PROVIDE INCREMENTAL FUNDING TO CLIN 0002 IN THE AMOUNT OF $14,211,340.00, CHANGING THE TOTAL OBLIGATION FROM $114,817,188.00 TO $129,028,528.00.

THE PURPOSE OF THIS MODIFICATION IS TO ADD INCREMENTAL FUNDING AND APPROVE FOUR CHANGE ORDERS

LEU ENRICHMENT MASTER IDIQ (ACO)

1.EXTEND THE PHASE 2 PERIOD OF PERFORMANCE END DATE FROM NOVEMBER 6, 2024, TO JUNE 30, 2025

HALEU ENRICHMENT MASTER IDIQ (ACO)

HALEU DECONVERSION SERVICES MASTER IDIQ (ACO)

THE PURPOSE OF THIS AMENDMENT TO: 1.PROVIDE INCREMENTAL FUNDING TO CLIN 0002 IN THE AMOUNT OF $28,906,490.90 2.PROVIDE INCREMENTAL FUNDING TO CLIN 0006 IN THE AMOUNT OF $345,521.00 3.AUTHORIZE THE INSTALLATION OF ONE REPLACEMENT X-6000 TRANSFORMER

THE PURPOSE OF THIS AMENDMENT TO THE CONTRACT IS TO: 1. DE-OBLIGATE CLIN 0002 FUNDING IN THE AMOUNT OF -$5,463,616.00 IN ORDER TO COMPLETE THE INTERNAL DOE ACCOUNTING ADJUSTMENT REFERENCED IN MOD 009, CHANGING THE TOTAL OBLIGATION FOR CLIN 0002 FR

1. PROVIDE INCREMENTAL FUNDING TO CLIN 0002 IN THE AMOUNT OF $20,627,096.00, CHANGING THE TOTAL OBLIGATION FROM $39,080,875.23 TO $59,707,971.23. NOTE: A SUBSEQUENT AMENDMENT WILL IMMEDIATELY FOLLOW IN ORDER TO DE-OBLIGATE $5,463,616.00 IN FUNDS

PROVIDE INCREMENTAL FUNDING TO CLIN 0002 IN THE AMOUNT OF $9,799,429.60, CHANGING THE TOTAL OBLIGATION FROM $29,281,445.63 TO 39,080,875.23.

PROVIDE INCREMENTAL FUNDING TO CLIN 0002 IN THE AMOUNT OF $4,756,181.53, CHANGING THE TOTAL OBLIGATION FROM $24,525,264.10 TO $29,281,445.63.

1.OBLIGATE FUNDING TO CLIN 0001 FOR $770,016.87.00, CHANGING THE TOTAL OBLIGATION FROM $28,270,000.00 TO $29,040,016.87. 2.OBLIGATE FUNDING TO CLIN 0007 FOR $19,795,264.10, CHANGING THE TOTAL OBLIGATION FROM $4,730,000.00 TO $24,525,264.10.

1) OBLIGATE $901,128.00 TO CLIN 00006, CHANGING THE TOTAL OBLIGATION FROM $150,000.00 TO $1,051,128.00. 2) OBLIGATE $4,562,488.00 TO CLIN 00007, CHANGING THE TOTAL OBLIGATION FROM $200,000.00 TO $4,762,488.00.

HIGH ASSAY LOW ENRICHED URANIUM (HALEU) CASCADE DEMO COMPLETION AND EXTENDED PRODUCTION 1.INCREMENTAL FUNDING IN THE AMOUNT OF $23,000,000. $3,730,000 GOING TO CLIN 0002 AND $19,270,000 GOING TO CLIN 0001.

HIGH ASSAY LOW ENRICHED URANIUM (HALEU) CASCADE DEMO COMPLETION AND EXTENDED PRODUCTION 1.INCREMENTAL FUNDING IN THE AMOUNT OF $23,000,000. $3,730,000 GOING TO CLIN 0002 AND $19,270,000 GOING TO CLIN 0001.

1.INCREMENTAL FUNDING IN THE AMOUNT OF $5,000,000. 2.UPDATE THE PERIOD OF PERFORMANCE START FROM 11/30/22 TO 12/01/22. 3.UPDATE CLAUSE 52.244-2 SUBCONTRACTS 4.APPROVE CLIN 2 ACTIVITIES IN CLIN 1

THE PURPOSE OF THIS INCREMENTAL FUNDING MODIFICATION IS TO OBLIGATE FUNDS IN THE AMOUNT OF +$4,231,185.72 FOR THE PAYMENT OF SERVICES CONTRACTED PRIOR TO 30 NOV 2022, AT THE END OF THE POP.

THE PURPOSE OF THIS INCREMENTAL FUNDING MODIFICATION IS TO OBLIGATE FUNDS OF +$5,343,521.34 FROM $158,940,188.63 BY +$5,343,521.34 TO $164,283,709.97. FUNDING IS FOR CLOSE OUT ACTIVITIES ONLY. NO ADDITIONAL SCOPE OF POP IS BEING PROVIDED AS RESULT.

HIGH ASSAY LOW ENRICHED URANIUM (HALEU) CASCADE DEMO COMPLETION AND EXTENDED PRODUCTION DE-OBLIGATE $2,203,879 FROM CLIN 0001 AND OBLIGATE $5,000,000 TO CLIN 0001.

HIGH ASSAY LOW ENRICHED URANIUM (HALEU) CASCADE DEMO COMPLETION AND EXTENDED PRODUCTION

THE PURPOSE OF THIS INCREMENTAL FUNDING MODIFICATION IS TO OBLIGATE FUNDS OF +$5,343,521.34 FROM $158,940,188.63 BY +$5,343,521.34 TO $164,283,709.97 TO ALLOW FOR THE CONTINUATION OF SERVICES.

THE PURPOSE OF THIS INCREMENTAL FUNDING MODIFATION IS TO OBLIGATE FUNDS OF +$2,640,000.00FROM $156,300,188.63 BY +$2,640,000.00 TO $158,940,188.63. THE TOTAL CONTRACT VALUE IS HEREBY INCREASED FROM $156,300,188.63 BY $2,640,000.00 TO $158,940,188.63

THE PURPOSE OF THIS INCREMENTAL FUNDING MODIFATION IS TO OBLIGATE FUNDS OF +$2,307,400.00FROM $153,992,788.63 BY +$2,307,400.00 TO $156,300,188.63. THE TOTAL CONTRACT VALUE IS HEREBY INCREASED FROM $153,992,788.63 BY $2,307,400.00 TO $156,300,188.63

FUNDING MOD

FUNDING MOD